Seriously never build Rabadon's any more or see anybody build it...
Cost is too high...

[zombie-nunu-tears] [zombie-brand-mindblown] [cass-cry] [sona-playing]
... Vlad is cool with it though... [vlad-salute]
Cost is too high...

[zombie-nunu-tears] [zombie-brand-mindblown] [cass-cry] [sona-playing]
... Vlad is cool with it though... [vlad-salute]
My main annie build is
in that order. Rabs is more useful as a mid to late game power spike then an early game ace item, the burst from
and the MR pen from
are far more useful then the flat damage from rabs.
However...
If the enemy has no tank and no MR what so ever i will rush rab as my third item rather then my 5th.
Too much gold, not enough investments. Hardly seen.
Rabadon requires a lot of gold is because it gives one of the highest amount of ability power in game, in addiction to a passive that adds even more ability power. That's also why it's situational, and if bought, is usually mid-late game,